UL/CSA Listed Power Fuses P F THE MOST POPULAR UL/CSA LISTED POWER FUSES TO MEET THE MOST POPULAR PROTECTION PRIORITIES

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1 UL/CSA Listed Power uses THE MOST POPULAR UL/CSA LISTED POWER USES TO MEET THE MOST POPULAR PROTECTION PRIORITIES P Your problem: Today, you need a timedelay power fuse that can handle normal surges. Tomorrow, it s a power fuse with a high interrupting rating and the added security of rejection dimensions. The day after that, one of those economical onetime power fuses will do the trick. And what if you need to provide fuses for a global solution? Where do you turn? Our solution: Mersen s comprehensive power fuse offering covers a complete range of applications and a complete range of circuit-protection needs. Whether it s the characteristics of our Tri-Onic Time-delay fuses, the high current-limiting capacity of our original Amp-Trap power fuses, the cost-efficient protection of our One-Time fuses, or any of our complete line of North American and European fuses, Mersen has the fuse you need. Want more information fast? or more technical or application-specific information, please call our power fuse experts at or visit our website at ep.mersen.com. Class L A4BQ...P 2 A4BY...P 4 A4BT...P 6 Class RK1 A2D-R &A6D-R...P 8 A2K-R & A6K-R...P 10 Class RK5 TR-R & TRS-R.... P 12 TRS-RDC... P 14 Class J AJT... P 16 AJT Reducer uses... P 18 HSJ...P 20 A4J....P 22 Class CC ATDR...P 24 ATQR...P 26 ATMR...P 28 Class G AG....P 29 Class K-5 OT/OTN/OTS...P 30 Class T A3T & A6T...P 32 Canadian uses Class C...P 34 Class H NRN/NRS P 36 Class H CRN/CRS...P 37 Accessories use Pullers/Clip Clamps... P 38

2 P A4BQ Time Delay/Class L UL/CSA LISTED POWER USES PUT THE HIGHEST CURRENT-LIMITATION... AT YOUR SERVICE RATINGS: Volts: 600VAC, 500VDC Amps: AC to 6000A, DC to 3000A IR: 200kA I.R. AC, 100kA I.R. DC (Self-certified for 600VAC, 300kA I.R., UL witnessed). Amp-Trap 2000 A4BQ fuses are 20% more current-limiting than any other Class L fuse on the market. When correctly coordinated, they bring a superior level of protection to service entrance equipment. Downstream circuit components have maximum protection against short circuit let-thru current. A4BQ s built-in, 4-second time-delay characteristic (at 500% of rated current) accommodates harmless inrush currents without nuisance opening. EATURES/BENEITS: astest operation under short circuit conditions: Let-thru currents are typically 20% lower, with a corresponding let-thru energy (clearing I 2 t) up to 40% lower than the next fastest Class L fuse Time-delay for high inrush loads such as motors and transformers, without nuisance opening 300kA interrupting rating - self-certified, UL witnessed tests Most current-limiting for lowest peak let-thru current; even at fault currents up to 300kA Recommended for Arc lash energy reduction Pure silver links ensure lowest let-thru current and longer fuse life Easy 2-to-1 selectivity for prevention of nuisance shutdowns and blackouts Rejection-style design prevents replacement errors High-visibility orange label gives instant brand recognition Reduced inventory because A4BQ can replace all older types of Class L fuses now in-service (continued on next page) APPLICATIONS: Mains eeders Large motors Lighting, heating & general loads Circuit breaker back-up DC rated: UPS DC links, battery disconnects, other DC applications APPROVALS: A4BQ ( ) UL listed to standard ile E2137 DC listed to UL standard 248 ( A) CSA certified to standard C22.2 No ( A) A4BQ ( ) - TA UL listed P 2 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

3 UL/CSA LISTED POWER USES CLASS L A4BQ Time Delay EATURES/BENEITS (CONTINUED): Metal-embossed date and catalog number for traceability and lasting identification iberglass body provides dimensional stability in harsh industrial settings High-grade silica filler ensures fast arc quenching Optional mechanical TA indicator ( A). Please contact factory for special trigger actuator P CATALOG NUMBERS (AMPS) A4BQ100 A4BQ500 A4BQ1000 A4BQ2000 A4BQ150 A4BQ600 A4BQ1200 A4BQ2500 A4BQ200 A4BQ601 A4BQ1350 A4BQ2501 A4BQ250 A4BQ650 A4BQ1400 A4BQ3000 A4BQ300 A4BQ700 A4BQ1500 A4BQ3500 A4BQ350 A4BQ750 A4BQ1600 A4BQ3800 A4BQ400 A4BQ800 A4BQ1800 A4BQ4000 A4BQ450 A4BQ900 A4BQ1900 A4BQ5000 A4BQ6000 Note: or remote blown fuse trigger actuator option add -TA to end of catalog number. Example: A4BQ1600-TA RECOMMENDED USE BLOCKS OR AMP-TRAP CLASS L USES use Ampere Rating P P412 Catalog Number 600V or Less 3 Pole Catalog number P48 is UL recognized Catalog number P412 is self-certified DIMENSIONS Ampere Rating A B C D E in mm in mm in mm in mm in mm / / / / / /2 63 3/ / / /2 63 3/ / / / / / / /2 89 1/ / / / / / / / / / / / / / / / / / / / / / / / A A A A A Safety Note: Class L fuses are dimensioned for one-way interchangeability. A Class L fuse of any lower ampere rating can be substituted for a given Class L fuse. EP.MERSEN.COM P 3

4 P A4BY Class L UL/CSA LISTED POWER USES COUNT ON THE HIGH INTERRUPTING RATING O OUR MOST WIDELY USED CLASS L USE RATINGS: Volts: 600VAC, 300VDC Amps: 200 to 6,000A (AC), 200 to 2,500A (DC) IR: 200kA.I.R. AC, 100kA I.R. DC When it comes to protecting service entrance equipment, feeder circuits, and circuit breakers, A4BY fuses are the industry s favorite. The A4BY is a 100% rated device and may be applied at continuous currents up to its ampere rating. A 4-second minimum time-delay at 500% rating allows the A4BY to pass normal current surges and to coordinate with ground fault relays. EATURES/BENEITS: Unique dimensions prevent replacement by other fuse classes Blade stamped catalog numbers for permanent identification Glass melamine body and plated terminals provide superior reliability in harsh environments HIGHLIGHTS: Current-limiting 4-second time-delay DC ratings Uniform characteristics in all ampere ratings APPLICATIONS: Mains, feeders Circuit breakers Load centers Panelboards Switchboards Metering centers APPROVALS: UL listed to standard ( A) ile E2137 CSA certified to standard C22.2 No ( A) Self-certified for DC per UL248 ( A) P 4 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

5 UL/CSA LISTED POWER USES CLASS L A4BY CATALOG NUMBERS (AMPS) A4BY200 A4BY700 A4BY1350 A4BY2500 A4BY250 A4BY750 A4BY1400 A4BY3000 A4BY300 A4BY800 A4BY1500 A4BY3001 A4BY350 A4BY801 A4BY1600 A4BY3500 A4BY400 A4BY900 A4BY1601 A4BY4000 A4BY450 A4BY1000 A4BY1800 A4BY4001 A4BY500 A4BY1100 A4BY2000 A4BY4500 A4BY600 A4BY1200 A4BY2001 A4BY5000 A4BY601 A4BY1201 A4BY2200 A4BY6000 A4BY650 Note: or optional blown fuse trigger indicator add -TI to the end of part number. Example: A4BY1600-TI. Consult factory for availability. RECOMMENDED USE BLOCKS OR AMP-TRAP CLASS L USES Catalog Number use Ampere 600V or Less Rating 3-Pole P P412 Catalog number P48 is UL recognized Catalog number P412 is self-certified A variety of pole configurations and termination provisions are available. Refer to Section B for details. P DIMENSIONS Ampere A B C D E Rating in mm in mm in mm in mm in mm / / / / / /2 63 3/ / / /2 63 3/ / / / / / / /2 89 1/ / / / / / / / / / / / / / / / / / / / / / / /32 88 Safety Note: Class L fuses are dimensioned for one-way interchangeability. A Class L fuse of any lower ampere rating can be substituted for a given Class L fuse A A A A A EP.MERSEN.COM P 5

6 P A4BT Time Delay/Class L UL/CSA LISTED POWER USES WHEN YOUR HEAVIER LOADS NEED PROTECTION, A4BT USES WON T LET YOU DOWN RATINGS: Volts: 600VAC, 500VDC Amps: 200 to 2,000A IR: 200kA I.R. AC, 100kA I.R. DC The high interrupting rating of A4BT current-limiting fuses is ideally suited for protecting mains, feeders, and general circuits. The 10-second time-delay at 500% of fuse rating is ideal for large motors and other loads with a high inrush. A4BT fuses are suitable for DC applications up to 500VDC. An A4BT fuse can be applied to normal loads up to its full ampere rating to allow 100% rating of equipment, while also providing superior current-limiting ability. EATURES/BENEITS: Unique dimensions prevent replacement by other fuse classes. Blade-stamped catalog numbers for permanent identification Glass melamine body and plated terminals provide superior reliability in harsh environments HIGHLIGHTS: Current-limiting ull 10-second delay DC ratings Uniform characteristics in all ampere ratings APPLICATIONS: Motors Motor controllers Transformers Mains eeders APPROVALS: UL Listed to standard ( A) ile E2137 CSA Certified to standard C22.2 No ( A) Self-certified for DC per UL248 ( ) P 6 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

7 UL/CSA LISTED POWER USES CLASS L A4BT Time Delay CATALOG NUMBERS (AMPS) A4BT200 A4BT500 A4BT800 A4BT1400 A4BT250 A4BT600 A4BT900 A4BT1500 A4BT300 A4BT601 A4BT1000 A4BT1600 A4BT350 A4BT650 A4BT1100 A4BT1800 A4BT400 A4BT700 A4BT1200 A4BT2000 A4BT450 A4BT750 RECOMMENDED USE BLOCKS OR AMP-TRAP CLASS L USES Catalog Number use Ampere Rating 600V or Less 3-Pole P P412 Catalog number P48 is UL recognized Catalog number P412 is self-certified P A variety of pole configurations and termination provisions are available. Refer to Section B for details. DIMENSIONS Ampere A B C D E Rating in mm in mm in mm in mm in mm / / / / / /2 63 3/ / / /2 63 3/ / / / / / / /2 89 1/ / /32 88 Safety Note: Class L fuses are dimensioned for one-way interchangeability. A Class L fuse of any lower ampere rating can be substituted for a given Class L fuse A A EP.MERSEN.COM P 7

8 P A2D-R & A6D-R Time Delay/Class RK1 UL/CSA LISTED POWER USES UPGRADE YESTERDAY S CIRCUITS TO TODAY S TYPE 2 PROTECTION RATINGS: A2D-R Volts: 250VAC/DC Amps: 1/10 to 600A (AC), 15 to 600A (DC) IR: 200kA I.R. AC, 100kA I.R. DC The Amp-Trap 2000 SmartSpot A2D-R and A6D-R fuses feature a visual open fuse indicator and provide IEC Type 2 No Damage protection to main, feeder, and branch circuits for all types of loads. With time-delay characteristics for handling harmless inrush currents, current-limiting ability and a wide range of ratings (from 1 to 600 Amperes), A2D-R and A6D-R fuses give excellent protection for all your applications. EATURES/BENEITS: Solid state SmartSpot visual blown fuse indicator Time-delay for motor starting and transformer inrush currents without nuisance opening 600VAC & 600VDC dual rated 300kA interrupting rating - self-certified, UL witnessed tests Extremely current-limiting for low peak let-thru current Recommended for Arc lash energy reduction Easy 2-to-1 selectivity for prevention of nuisance shut downs and black outs Rejection-style design prevents replacement errors (when used with recommended fuse blocks) High-visibility orange label gives instant brand recognition Reduced inventory by taking the place of class RK5, K, and H fuses Metal-embossed date and catalog number for easier traceability and lasting identification iberglass body provides dimensional stability in harsh industrial settings A6D-R Volts: 600VAC/DC Amps: 1/10 to 600A IR: 200kA I.R. AC, 100kA I.R. DC (Self-certified for 300kA I.R., UL witnessed.) APPLICATIONS: Motors Safety switches Transformers Branch circuit protection Disconnects Control panels All general-purpose circuits Note: See motor fuse applications tables on page P7 APPROVALS: UL listed to standard ile E2137 DC listed to UL standard 248 CSA certified to standard C22.2 No P 8 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

9 UL/CSA LISTED POWER USES CLASS RK-1 A2D-R & A6D-R Time Delay CATALOG NUMBERS (AMPS) 250V 600V A2D1/10R A2D3-1/2R A2D50R A6D1/10R A6D3-1/2R A6D50R A2D15/100R A2D4R A2D60R A6D15/100R A6D4R A6D60R A2D2/10R A2D4-1/2R A2D70R A6D2/10R A6D4-1/2R A6D70R A2D3/10R A2D5R A2D75R A6D3/10R A6D5R - A2D4/10R A2D5-6/10R A2D80R A6D4/10R A6D5-6/10R A6D80R A2D1/2R A2D6R A2D90R A6D1/2R A6D6R A6D90R A2D6/10R A2D6-1/4R A2D100R A6D6/10R A6D6-1/4R A6D100R A2D8/10R A2D7R A2D110R A6D8/10R A6D7R A6D110R A2D1R A2D8R A2D125R A6D1R A6D8R A6D125R A2D1-1/8R A2D9R A2D150R A6D1-1/8R A6D9R A6D150R A2D1-1/4R A2D10R A2D175R A6D1-1/4R A6D10R A6D175R A2D1-4/10R A2D12R A2D200R A6D1-4/10R A6D12R A6D200R A2D1-6/10R A2D15R A2D225R A6D1-6/10R A6D15R A6D225R A2D1-8/10R A2D17-1/2R A2D250R A6D1-8/10R A6D17-1/2R A6D250R A2D2R A2D20R A2D300R A6D2R A6D20R A6D300R A2D2-1/4R A2D25R A2D350R A6D2-1/4R A6D25R A6D350R A2D2-1/2R A2D30R A2D400R A6D2-1/2R A6D30R A6D400R A2D2-8/10R A2D35R A2D450R A6D2-8/10R A6D35R A6D450R A2D3R A2D40R A2D500R A6D3R A6D40R A6D500R A2D3-2/10R A2D45R A2D600R A6D3-2/10R A6D45R A6D600R Note: SmartSpot visual indicator is not available (1/10-7A) DIMENSIONS RECOMMENDED USE BLOCKS WITH BOX CONNECTORS OR AMP-TRAP CLASS RK1 USES use Catalog Number Ampere 250V or Less 600V or Less Rating 1 Pole 3 Pole 1 Pole 3 Pole R 20308R 60306R 60308R R 20608R 60606R 60608R R 21038R 61036R 61038R R 22003R 62001R 62003R R 24003R 64001R 64003R R 2633R 6631R 6633R A variety of pole configurations and termination provisions are available. Refer to Section B for details. P Ampere Rating A B C D E In mm In mm In mm In mm In mm 250V-A2D / / / / /8 3 3/ / / / / / / / / / / / / / / V-A6D / / / / / /8 3 3/ / / / / / / / / / / / /8 80 1/ / A A EP.MERSEN.COM P 9

10 P A2K-R & A6K-R ast Acting/Class RK1 UL/CSA LISTED POWER USES THESE AST-ACTING USES DELIVER A HIGH DEGREE O CURRENT LIMITATION WHERE YOU NEED IT MOST Current-limiting A2K and A6K fuses provide excellent protection where high available short circuit currents exist. These fast-acting fuses are particularly good for branch/feeder circuits and back-up protection. EATURES/BENEITS: Rejection style design prevents replacement by other fuse classes iberglass body provides dimensional stability in harsh industrial environments Easy-to-read imprint label for quick recognition and replacement High degree of current limitation for low peak let-thru current RATINGS: A2K Volts: 250VAC / DC Amps: 1 to 600A IR: 200kA I.R. AC, 20kA I.R. DC A6K Volts: 600VAC / 300VDC Amps: 1 to 600A IR: 200kA I.R. AC, 20kA I.R. DC HIGHLIGHTS Highly current-limiting ast-acting Rejection style APPLICATIONS: Loadcenters Panelboards Switchboards Bus duct eeder circuits Non-inductive loads Lighting circuits APPROVALS: UL listed to standard ile E2137 CSA certified to standard C22.2 No Self-certified for DC per UL248 P 10 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

11 UL/CSA LISTED POWER USES CLASS RK-1 A2K-R & A6K-R ast Acting CATALOG NUMBERS (AMPS) 250V 600V A2K1R A2K35R A2K175R A6K1R A6K35R A6K175R A2K3R A2K40R A2K200R A6K3R A6K40R A6K200R - A2K45R A2K225R A6K4R A6K45R A6K225R A2K5R A2K50R A2K250R A6K5R A6K50R A6K250R A2K6R A2K60R A2K300R A6K6R A6K60R A6K300R - A2K70R A2K350R A6K8R A6K70R A6K350R A2K10R A2K80R A2K400R A6K10R A6K80R A6K400R A2K15R A2K100R A2K500R A6K15R A6K100R A6K500R A2K20R A2K110R A2K600R A6K20R A6K110R A6K600R A2K25R A2K125R A6K25R A6K125R A2K30R A2K150R A6K30R A6K150R DIMENSIONS RECOMMENDED USE BLOCKS WITH BOX CONNECTORS OR AMP-TRAP CLASS RK1 USES use Ampere Rating Catalog Number 250V 600V 1-Pole 3-Pole 1-Pole 3-Pole R 20308R 60306R 60308R R 20608R 60606R 60608R R 21038R 61036R 61038R R 22003R 62001R 62003R R 24003R 64001R 64003R R 2633R 6631R 6633R A variety of pole configurations and termination provisions are available. Refer to Section B for details. P Ampere Rating A B C D E in mm in mm in mm in mm in mm 250V-A2K uses / / / / /8 3 3/ / / / / / / / / / / / / / / V-A6K uses / / / / / /8 3 3/ / / / / / / / / / / / /8 80 1/ / A A EP.MERSEN.COM P 11

12 P TR-R & TRS-R Time Delay/Class RK5 UL/CSA LISTED POWER USES THE INDUSTRY S MOST POPULAR USE OR MOTOR CIRCUIT PROTECTION With advanced material technology added to the existing product, the Tri-Onic TR and TRS current-limiting time-delay fuses are engineered for overcurrent protection of motors and transformers, service entrance equipment, feeder and branch circuits. Tri-Onic fuse s proven time-delay characteristic safely handles harmless starting currents and inrush currents associated with today s motors and transformers. Now available with optional SmartSpot blown fuse indication technology. EATURES/BENEITS: Time-delay Current-limiting AC & DC rated Optional solid state SmartSpot blown fuse indicator Time-delay for motor start-ups and transformer inrush currents without nuisance opening Current-limiting for low peak let-thru current Rejection-style design prevents replacement errors (when used with recommended fuse blocks) Easy-to-read label for quick brand recognition and replacement Metal-embossed date and catalog number for traceability and lasting identification iberglass body provides dimensional stability in harsh industrial settings High-grade silica filler ensures fast arc quenching and high current limitation RATINGS: TR-R Volts: 250VAC; 250VDC (.1-2.8A; A); 160VDC (3-30A; A) Amps: 1/10 to 600A IR: 200kA I.R. AC / 20kA I.R. DC TRS-R Volts: 600VAC; 600VDC (.1-12A; A); 300VDC (15-60A) Amps: 1/10 to 600A IR: 200kA I.R. AC; 1/10A to 60A -> 20kA I.R. DC; 70A to 600A -> 100kA I.R. DC APPLICATIONS: Motor circuits Mains eeders Branch circuits Transformers Service entrance equipment General-purpose equipment APPROVALS: UL listed to standard ile E2137 CSA certified to standard C22.2 no DC listed to UL standard 248 TRS only P 12 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

13 UL/CSA LISTED POWER USES CLASS RK5 TR-R & TRS-R Time Delay CATALOG NUMBERS (AMPS) 250V 600V TR1/10R* TR3-1/2R* TR50R TRS1/10R* TRS3-1/2R* TRS50R TR15/100R* TR4R* TR60R TRS15/100R* TRS4R* TRS60R TR2/10R* TR4-1/2R* TR70R TRS2/10R* TRS4-1/2R* TRS70R TR3/10R* TR5R* TR75R* TRS3/10R* TRS5R* TRS75R* TR4/10R* TR5-6/10R* TR80R TRS4/10R* TRS5-6/10R* TRS80R TR1/2R* TR6R* TR90R TRS1/2R* TRS6R* TRS90R TR6/10R* TR6-1/4R* TR100R TRS6/10R* TRS6-1/4R* TRS100R TR8/10R* TR7R* TR110R TRS8/10R* TRS7R* TRS110R TR1R* TR8R TR125R TRS1R* TRS8R TRS125R TR1-1/8R* TR9R TR150R TRS1-1/8R* TRS9R TRS150R TR1-1/4R* TR10R TR175R TRS1-1/4R* TRS10R TRS175R TR1-4/10R* TR12R TR200R TRS1-4/10R* TRS12R TRS200R TR1-6/10R* TR15R TR225R TRS1-6/10R* TRS15R TRS225R TR1-8/10R* TR17-1/2R TR250R TRS1-8/10R* TRS17-1/2R TRS250R TR2R* TR20R TR300R TRS2R* TRS20R TRS300R TR2-1/4R* TR25R TR350R TRS2-1/4R* TRS25R TRS350R TR2-1/2R* TR30R TR400R TRS2-1/2R* TRS30R TRS400R TR2-8/10R* TR35R TR450R TRS2-8/10R* TRS35R TRS450R TR3R* TR40R TR500R TRS3R* TRS40R TRS500R TR3-2/10R* TR45R TR600R TRS3-2/10R* TRS45R TRS600R RECOMMENDED USE BLOCKS WITH BOX CONNECTORS OR TRI-ONIC CLASS RK5 USES use Catalog Number Ampere 250V 600V Rating 1-Pole 3 -Pole 1-Pole 3-Pole R 20308R 60306R 60308R R 20608R 60606R 60608R R 21038R 61036R 61038R R 22003R 62001R 62003R R 24003R 64001R 64003R R 2633R 6631R 6633R A variety of pole configurations and termination provisions are available. Refer to Section B for details. P Note: Optional blown fuse visual indication available. To order, place ID at the end of the catalog number. Example: #TRS30RID * Not available with optional blow fuse indicator. Tin plated end caps are available on Non-ID fuses less than 60A. Example Part # TRP30R, TRSP30R DIMENSIONS Ampere Rating A B C D E In. mm In. mm In. mm In. mm In. mm 250V-TR uses / / / / /8 3 3/ / / / / / / / / / / / / / / V-TRS uses / / / / / /8 3 3/ / / / / / / / / / / / /8 80 1/ / A A EP.MERSEN.COM P 13

14 P TRS-RDC Time Delay/Class RK5 UL/CSA LISTED POWER USES DC RATED OR TOUGH DC APPLICATIONS RATINGS: Volts: 300VDC (0.1 to 30A); 600VDC (35 to 400A) Amps: 1/10 to 400A IR: 20kA I.R. DC The Tri-Onic DC fuse series is designed for DC circuit protection in surface and underground mines. The TRS-RDC is MSHA approved and meets the industry s most severe third party requirements for 600VDC rated fuses. The TRS-RDC is a time-delay fuse with essentially the same time-current characteristics as the standard Tri-Onic fuse. EATURES/BENEITS: DC rated for mine duty and other long time-constant applications Time-delay for motor start-ups and high inrush loads without nuisance opening Rugged glass melamine body for superior reliability in harsh environments HIGHLIGHTS: Time-delay DC rated APPLICATIONS: Mine circuits Trailing cables Pump motors Rail heaters APPROVALS: MSHA approval no P 14 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

15 UL/CSA LISTED POWER USES CLASS RK5 TRS-RDC Time Delay CATALOG NUMBERS (AMPS) TRS1/10RDC TRS1-8/10RDC TRS6-1/4RDC TRS60RDC TRS15/100RDC TRS2RDC TRS8RDC TRS70RDC TRS2/10RDC TRS2-1/4RDC TRS9RDC TRS80RDC TRS3/10RDC TRS2-1/2RDC TRS10RDC TRS90RDC TRS4/10RDC TRS2-8/10RDC TRS12RDC TRS100RDC TRS1/2RDC TRS3RDC TRS15RDC TRS125RDC TRS6/10RDC TRS3-2/10RDC TRS17-1/2RDC TRS150RDC TRS8/10RDC TRS3-1/2RDC TRS20RDC TRS175RDC TRS1RDC TRS4RDC TRS30RDC TRS200RDC TRS1-1/8RDC TRS4-1/2RDC TRS35RDC TRS250RDC TRS1-1/4RDC TRS5RDC TRS40RDC TRS300RDC TRS1-4/10RDC TRS5-6/10RDC TRS45RDC TRS400RDC TRS1-6/10RDC TRS6RDC TRS50RDC RECOMMENDED USE BLOCKS WITH BOX CONNECTORS OR TRI-ONIC CLASS RK5 USES use Catalog Number Ampere 250V 600V Rating 1-Pole 3-Pole 1-Pole 3-Pole R 20308R 60306R 60308R R 20608R 60606R 60608R R 21038R 61036R 61038R R 22003R 62001R 62003R R 24003R 64001R 64003R A variety of pole configurations and termination provisions are available. Refer to Section B for details. P DIMENSIONS Ampere A B C D E Rating In. mm In. mm In. mm In. mm In. mm / / / / / /8 3 3/ / / / / / / / / / / Amperes Amperes EP.MERSEN.COM P 15

16 P AJT Time Delay/Class J UL/CSA LISTED POWER USES SMARTSPOT WITH MAXIMUM CIRCUIT PROTECTION RATINGS: Volts: 600VAC or less, 500VDC or less Amps: 1 to 600A IR: 200kA I.R. AC, 100kA I.R. DC (Self-certified for 600VAC, 300kA I.R., UL witnessed). Amp-Trap 2000 SmartSpot AJT fuses now provide a visual open fuse indicator. With advanced material technology the AJT fuse provides IEC Type 2 No Damage protection to main, feeder, and branch circuits, for all types of loads yet, they require only half the mounting space needed for 600VAC Class RK fuses. AJT s time-delay characteristics are ideal for handling typical motor and transformer inrush currents, while also providing superior current-limiting ability. EATURES/BENEITS: Solid state SmartSpot visual blown fuse indicator Time-delay for motor starting and transformer inrush 300kA interrupting rating - self-certified, UL witnessed tests Extremely current-limiting for low peak let-thru current Most current-limiting UL class fuse Recommended for Arc lash energy reduction Small footprint requires less mounting space and allows smaller, more economical fuse blocks Easy 2-to-1 selectivity for prevention of nuisance shutdowns Unique Class J dimensions prevent replacement errors High-visibility orange label gives instant brand recognition Metal-embossed date and catalog number for traceability and lasting identification iberglass body provides dimensional stability in harsh industrial settings High-grade silica filler ensures fast arc quenching Optional EI indicator/switch mount for AJT70 to 600 open fuse indication APPLICATIONS: Motor circuits Mains eeders Branch circuits Lighting, heating & general loads Transformers Control panels Circuit breaker back-up Bus duct Load centers APPROVALS: AJT (1-600): UL listed to standard ile E2137 DC listed to UL standard 248 CSA certified to standard C22.2 No IEC AJT (70-600) EI: UL listed DC tested to UL standard 248 P 16 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

17 UL/CSA LISTED POWER USES CLASS J AJT Time Delay CATALOG NUMBERS (AMPS) AJT1 AJT4-1/2 AJT25 AJT125 AJT1-1/4 AJT5 AJT30 AJT150 AJT1-1/2 AJT5-6/10 AJT35 AJT175 AJT1-6/10 AJT6 AJT40 AJT200 AJT1-8/10 AJT6-1/4 AJT45 AJT225 AJT2 AJT7 AJT50 AJT250 AJT2-1/4 AJT8 AJT60 AJT300 AJT2-1/2 AJT9 AJT70 AJT350 AJT2-8/10 AJT10 AJT80 AJT400 AJT3 AJT12 AJT90 AJT450 AJT3-2/10 AJT15 AJT100 AJT500 AJT3-1/2 AJT17-1/2 AJT110 AJT600 AJT4 AJT20 Note: SmartSpot visual indicator is not available (1-7A) DIMENSIONS RECOMMENDED USE BLOCKS WITH BOX CONNECTORS OR AMP-TRAP CLASS J USES use Ampere Rating Catalog Number 600V or Less 1 Pole 3 Pole 0-30 US3J1I US3J3I US6J1I US6J3I J 61038J J 62003J J 64033J J 6633J A variety of pole configurations and termination provisions are available. Refer to Section B for details. P Ampere A B C D E G H Rating in mm in mm in mm in mm in mm in mm in mm in mm / / / / / / / / /8 92 3/8 10 9/ / /8 41 3/ / / / /8 10 9/ / /8 54 1/ / / / / / /2 64 3/ / / / A A OPTIONAL INDICATOR/MICROSWITCH MOUNT (EI) DIMENSIONS: Note: uses with the EI option are designed to work with the AOS-S or AOS-Q add-on switch (ordered separately). Catalog Number AJT (70-100)-EI AJT ( )-EI AJT ( )-EI AJT ( )-EI A 2.8 in (71.0 mm) 3.22 in (81.8 mm) 3.24 in (82.2 mm) 3.61 in (91.8 mm) EP.MERSEN.COM P 17

18 P AJT Reducer uses Time Delay/Class J UL/CSA LISTED POWER USES DECREASE YOUR CURRENT RATING WITHOUT USING A USE REDUCER RATINGS: Volts: 600VAC, 500VDC Amps: 125 to 200A (in 400A body), 250 to 400A (in 600A body) IR: 200kA I.R. AC, 100kA I.R. DC (Self-certified for 600VAC, 300kA I.R., UL witnessed). AJT Reducer uses are a safe permanent solution for decreasing your current rating without using a use Reducer accessory, which is designed for temporary use only. These Type RR Reduced Rating fuses provide the same trusted protection levels as a traditional AJT fuses, but in a larger body. EATURES/BENEITS: Replaces traditional temporary use only fuse reducers Recommended for Arc lash energy reduction Extremely current-limiting for low peak let-thru current Most current-limiting UL class fuse Time-delay for motor starting and transformer inrush High-visibility orange label gives instant brand recognition Metal-embossed date and catalog number for traceability and lasting identification iberglass body provides dimensional stability in harsh industrial settings High-grade silica filler ensures fast arc quenching Optional EI indicator/switch APPLICATIONS: Motor circuits Mains eeders Branch circuits Lighting, heating & general loads Transformers Control panels Circuit breaker back-up Bus duct Load centers Note: See motor fuse applications tables for additional information APPROVALS: AJT (1-600): UL Listed to standard ile E2137 IEC HIGHLIGHTS: Type RR Reduced Rating Arc lash mitigating Highly current-limiting Time-delay DC ratings Optional mechanical indicator P 18 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

19 UL/CSA LISTED POWER USES CLASS J TYPE RR Reduced Rating uses CATALOG NUMBERS (AMPS) Catalog Numbers Amp Rating Body Size AJT125/ A AJT150/ A AJT175/ A 400A AJT200/ A AJT250/ A AJT300/ A AJT350/ A 600A AJT400/ A DIMENSIONS RECOMMENDED USE BLOCKS WITH BOX CONNECTORS OR AMP-TRAP CLASS J USES Amp Rating/ Body Size Catalog Number 600V or Less 1 Pole 3 Pole 125/ / J 64033J 250/ / J 6633J A variety of pole configurations and termination provisions are available. Refer to Section B for details. P Ampere Rating A B C D E G H in mm in mm in mm in mm in mm in mm in mm in mm / /8 54 1/ / / / / / /2 64 3/ / / / A EP.MERSEN.COM P 19

20 P HSJ High Speed/Class J UL/CSA LISTED POWER USES PROTECT YOUR WIRING AND POWER SEMICONDUCTORS WITH A SINGLE USE RATINGS: Volts: 600VAC, 500VDC Amps: 1 to 600A (AC), 15 to 600A (DC) IR: 200kA I.R. AC, 100kA I.R. DC, L/R =10mS or less (Self Certified for 600VAC, 300kA I.R., UL witnessed.) The High Speed J (HSJ) fuse combines the low I 2 t of a semiconductor fuse and the branch circuit performance of a Class J UL listed fuse. This fuse was designed for the starting characteristics of solid state motor controllers. The HSJ can provide branch circuit protection per NEC requirements, as well as very low I 2 t for protection of power semiconductors such as Diodes, SCRs, GTOs and SSRs. EATURES/BENEITS: Optimized over-load capability for withstanding elevated levels of current during electronic motor controller starts Low I 2 t (low thermal energy) Excellent cycling ability for frequent starts/stops without nuisance opening HIGHLIGHTS: Current-limiting AC & DC ratings Low I 2 t Compact size APPLICATIONS: Branch circuits Control panels Electronic motor controllers Phase controllers Drives Soft-starters Solid state relays APPROVALS: UL listed to standard ile E2137 CSA certified to standard C22.2 no DC listed to UL 248 P 20 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

21 UL/CSA LISTED POWER USES CLASS J HSJ High Speed CATALOG NUMBERS (AMPS) HSJ1 HSJ30 HSJ90 HSJ250 HSJ3 HSJ35 HSJ100 HSJ300 HSJ6 HSJ40 HSJ110 HSJ350 HSJ10 HSJ45 HSJ125 HSJ400 HSJ15 HSJ50 HSJ150 HSJ450 HSJ17-1/2 HSJ60 HSJ175 HSJ500 HSJ20 HSJ70 HSJ200 HSJ600 HSJ25 HSJ80 HSJ225 RECOMMENDED USE BLOCKS WITH BOX CONNECTORS OR AMP-TRAP CLASS J USES Catalog Number use Ampere Rating 600V or Less 1-Pole 3-Pole 0-30 US3J1I US3J3I US6J1I US6J3I J 61038J J 62003J J 64033J J 6633J A variety of pole configurations and termination provisions are available. Refer to Section B for details. P DIMENSIONS Ampere A B C D E G H Rating in mm in mm in mm in mm in mm in mm in mm in mm / / / / / /8 29 1/ / /8 92 3/8 10 9/ / /8 41 3/ / / / /8 10 9/ / /8 54 1/ / / / / / /2 64 3/ / / / A A EP.MERSEN.COM P 21

22 P A4J ast Acting/Class J UL/CSA LISTED POWER USES OR EXCELLENT CURRENT-LIMITING PROTECTION RATINGS: Volts: 600VAC, 300VDC Amps: 1 to 600A IR: 200kA I.R. AC, 100kA I.R. DC A4J Class J fuses deliver excellent current-limiting protection to a wide variety of applications. Their unique dimensions prevent the substitution of other fuses with lower voltage ratings, interrupting ratings, or current-limiting capability. EATURES/BENEITS: High current limitation for low peak let-thru current Unique dimensions prevent replacement by other fuse classes iberglass body provides dimensional stability in harsh industrial environments Easy-to-read imprint label for quick recognition and replacement HIGHLIGHTS: ast-acting Very current-limiting DC ratings APPLICATIONS: Capacitors Load centers Panelboards Switchboards Bus duct eeder circuits Circuit breakers Lighting, heating, and general loads APPROVALS: UL listed to standard ile E2137 CSA certified to standard C22.2 no DC listed to UL 248 IEC P 22 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

23 UL/CSA LISTED POWER USES CLASS J A4J ast Acting CATALOG NUMBERS (AMPS) A4J1 A4J35 A4J90 A4J250 A4J3 A4J40 A4J100 A4J300 A4J6 A4J45 A4J110 A4J350 A4J10 A4J50 A4J125 A4J400 A4J15 A4J60 A4J150 A4J450 A4J20 A4J70 A4J175 A4J500 A4J25 A4J75 A4J200 A4J600 A4J30 A4J80 A4J225 RECOMMENDED USE BLOCKS WITH BOX CONNECTORS OR AMP-TRAP CLASS J USES Catalog Number use Ampere Rating 600V or Less 1-Pole 3-Pole 0-30 US3J1I US3J3I US6J1I US6J3I J 61038J J 62003J J 64033J J A variety of pole configurations and termination provisions are available. Refer to Section B for details. P DIMENSIONS Ampere A B C D E G H Rating in mm in mm in mm in mm in mm in mm in mm in mm / / / / / /8 29 1/ / /8 92 3/8 10 9/ / /8 41 3/ / / / /8 10 9/ / /8 54 1/ / / / / / /2 64 3/ / / / A A EP.MERSEN.COM P 23

24 P ATDR Time Delay/Class CC UL/CSA LISTED POWER USES THE BEST PROTECTION OR TODAY S SMALL MOTORS RATINGS: Volts: 600VAC, 300VDC Amps: 1/4 to 30A IR: 200kA I.R. AC, 100kA I.R. DC Amp-Trap 2000 ATDR small-dimension fuses can provide IEC Type 2 No Damage protection to your facility s increasingly sensitive branch circuit components and small motors minimizing the risk of faultrelated damage. ATDR Class CC fuses deliver the best time-delay characteristics in their class with excellent cycling ability for small motor loads. EATURES/BENEITS: Time-delay for motor starting inrush currents without nuisance opening Highly current-limiting for low peak let-thru current Improved cycling ability for frequent motor starts/stops without nuisance fuse opening Rejection-style design prevents replacement errors (when used with recommended fuse blocks) High-visibility orange label ensures instant brand recognition, simplifies replacement Metal-embossed date and catalog number for traceability and lasting identification iberglass body provides dimensional stability in harsh industrial settings High-grade silica filler ensures fast arc quenching and optimum current-limitation APPLICATIONS: Small motors Contactors Lighting, heating & general loads Branch circuit protection Note: See motor fuse applications tables for more information APPROVALS: UL listed to standard ile E2137 CSA certified to standard C22.2 No DC listed to UL standard 248 P 24 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

25 UL/CSA LISTED POWER USES CLASS CC ATDR Time Delay HIGHLIGHTS: Time-delay Best choice for small motor protection Highly current-limiting AC & DC rated P CATALOG NUMBERS (AMPS) ATDR1/4 ATDR1-1/2 ATDR3 ATDR6 ATDR12 ATDR1/2 ATDR1-6/10 ATDR3-2/10 ATDR6-1/4 ATDR15 ATDR8/10 ATDR1-8/10 ATDR3-1/2 ATDR7 ATDR17-1/2 ATDR1 ATDR2 ATDR4 ATDR7-1/2 ATDR20 ATDR1-1/8 ATDR2-1/4 ATDR4-1/2 ATDR8 ATDR25 ATDR1-1/4 ATDR2-1/2 ATDR5 ATDR9 ATDR30 ATDR1-4/10 ATDR2-8/10 ATDR5-6/10 ATDR10 RECOMMENDED USE BLOCKS OR CLASS CC USES Catalog Numbers Number of Poles UltraSafe Indicating use Holder Screw Connector w/ Double Quick Connects Pressure Plate Connector w/ Double Quick Connects Copper Box Connector ADDER 30310R 30320R 30350R 1 USCC1I 30311R 30321R 30351R 2 USCC2I 30312R 30322R 30352R 3 USCC3I 30313R 30323R 30353R 3 USMCCI DIMENSIONS EP.MERSEN.COM P 25

26 P ATQR Time Delay/Class CC UL/CSA LISTED POWER USES TAKE CONTROL O AULT CURRENTS HEADED OR YOUR CONTROL TRANSORMER RATINGS: Volts: 600VAC (1/10-30A), 300VDC (3-2/10 30A) Amps: 1/10 to 30A IR: 200kA I.R. AC, 100kA I.R. DC ATQR small-dimension fuses feature time-delay characteristics ideally suited for the high inrush currents of control transformers, solenoids, and similar inductive loads. Mersen s ATQR fuses provide superior protection for the branch circuits of electrical distribution systems. EATURES/BENEITS: Time-delay for control transformer inrush loads without nuisance opening Highly current-limiting for low peak let-thru current Rejection-style design prevents replacement errors (when used with recommended fuse blocks) High visibility orange label ensures instant brand recognition, and simplifies replacement Metal-embossed date and catalog number for traceability and lasting identification iberglass body provides dimensional stability in harsh industrial settings High-grade silica filler ensures fast arc quenching and high current limitation APPLICATIONS: Control transformers Solenoids Inductive loads Lighting, heating & general-purpose loads Note: See motor fuse applications tables for more information APPROVALS: UL listed to standard ile E2137 DC listed to UL standard 248 CSA certified to standard C22.2 No HIGHLIGHTS: Time-delay Best choice for small transformer protection Current-limiting P 26 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

27 UL/CSA LISTED POWER USES CLASS CC ATQR Time Delay CATALOG NUMBERS (AMPS) ATQR1/10 ATQR8/10 ATQR2-8/10 ATQR7-1/2 ATQR1/8 ATQR1 ATQR3 ATQR8 ATQR3/16 ATQR1-1/8 ATQR3-2/10 ATQR9 ATQR2/10 ATQR1-1/4 ATQR3-1/2 ATQR10 ATQR1/4 ATQR1-4/10 ATQR4 ATQR12 ATQR3/10 ATQR1-1/2 ATQR4-1/2 ATQR15 ATQR4/10 ATQR1-6/10 ATQR5 ATQR17-1/2 ATQR1/2 ATQR1-8/10 ATQR5-6/10 ATQR20 ATQR6/10 ATQR2 ATQR6 ATQR25 ATQR3/4 ATQR2-1/4 ATQR6-1/4 ATQR30 ATQR2-1/2 ATQR7 P RECOMMENDED USE BLOCKS OR CLASS CC USES Catalog Numbers Number of Poles UltraSafe Indicating use Holder Screw Connector w/ Double Quick Connects Pressure Plate Connector w/ Double Quick Connects Copper Box Connector ADDER 30310R 30320R 30350R 1 USCC1I 30311R 30321R 30351R 2 USCC2I 30312R 30322R 30352R 3 USCC3I 30313R 30323R 30353R 3 USMCCI DIMENSIONS EP.MERSEN.COM P 27

28 P ATMR ast Acting/Class CC UL/CSA LISTED POWER USES SMALL USE - BIG PROTECTION OR GENERAL CIRCUITS RATINGS: Volts: 600VAC / DC Amps: 1/10 to 30A IR: 200kA I.R. AC, 100kA I.R. DC Amp-Trap ATMR fuses, in the Class CC family, are the smallest dimension 600VAC/DC fuses suitable for branch circuit protection. The ATMR is a popular choice for economical protection of control circuits and control circuit transformers where available short circuit currents exceed 10,000 amperes. ATMR s rejection dimensions prevent substitution by lesser rated fuses. These fast acting fuses give currentlimiting protection to general circuits. CATALOG NUMBERS (AMPS) ATMR1/10 ATMR1 ATMR4 ATMR10 ATMR1/8 ATMR1-1/4 ATMR5 ATMR12 ATMR2/10 ATMR1-1/2 ATMR6 ATMR15 ATMR1/4 ATMR2 ATMR7 ATMR20 ATMR3/10 ATMR2-1/2 ATMR8 ATMR25 ATMR1/2 ATMR3 ATMR9 ATMR30 ATMR3/4 ATMR3-1/2 RECOMMENDED USE BLOCKS OR AMP-TRAP CLASS CC USES Number of Poles UltraSafe Indicating use Holders Screw Connector with Double Quick Connects Pressure Plate Connector with Double Quick Connects DIMENSIONS Cooper Box Connector Adder 30310R 30320R 30350R 1 USCC1I 30311R 30321R 30351R 2 USCC2I 30312R 30322R 30352R 3 USCC3I 30313R 30323R 30353R 3 USMCCI A variety of pole configurations and termination provisions are available. Refer to Section B for details. HIGHLIGHTS: ast-acting Very current-limiting EATURES/ BENEITS: Rejection-style design prevents replacement errors when used with recommended fuse blocks Versatile design for individual component and branch circuit protection APPLICATIONS: Control circuits Lighting General loads Branch circuit protection APPROVALS: UL Listed to Standard ile E2137 CSA Certified to Standard C22.2 No DC listed to UL Standard 248 P 28 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

29 AG Class G P UL/CSA LISTED POWER USES AMP-TRAP AG USES IT RIGHT INTO A WIDE VARIETY O INDUSTRIAL APPLICATIONS RATINGS: Volts: 600VAC (1/2 to 20A), 480VAC (25 to 60A) Amps: 1/2 to 60A IR: 100kA I.R. AC The Mersen Amp-Trap AG fuse series is a complete line of Class G fuses. AG fuses safely fit a wide variety of applications. Class G fuses are made in four physical sizes and provide superior branchcircuit protection for lighting, heating, and appliance circuits. EATURES/BENEITS: our unique sizes from ½-60 amperes do not allow inter-changeability with other fuse classes iberglass bodies provide dimensional stability in harsh industrial settings CATALOG NUMBERS (AMPS) HIGHLIGHTS: Current-limiting Time-delay (above 5A) APPLICATIONS: Lighting Heating* Appliances *except in Canada where fuses must be P or D type. APPROVALS: UL listed to standard ile E2137 CSA certified to standard C22.2 No AG1/2 AG2 AG5 AG10 AG25 AG40 AG50 AG1 AG3 AG6 AG15 AG30 AG45 AG60 AG1-1/2 AG4 AG8 AG20 AG35 DIMENSIONS Ampere A B C Rating in mm in mm in mm 1/2-15A A , 30A A Cross Reference: AG will replace the following fuses: Bussmann SC, Littelfuse SLC EP.MERSEN.COM or correct, without notice, any information contained in this datasheet. P 29

30 P OT/OTN/OTS Class K-5 UL/CSA LISTED POWER USES OR VERSATILITY AND ECONOMY, THESE GENERAL PURPOSE USES ARE HARD TO BEAT OT, OTN and OTS general purpose fuses provide low cost protection for feeder and branch circuits serving lighting, heating, and other non-motor loads. OT, OTN and OTS fuses will safely interrupt available short circuit currents up to 50,000 amperes in all ratings. OT, OTN and OTS fuses are not rejection fuses care should be taken to ensure that replacement fuses do not have lower interrupting ratings than original fuses. OTN 15 through 60 satisfy the Canadian electrical code requirement for Type P, low melting-point, non-time-delay fuses. EATURES/BENEITS: Easy to read imprint label for quick recognition and replacement Low cost for high protection value APPLICATIONS: eeders Branch circuits Resistive heating Residential and small commercial installations RATINGS: OT Volts: 250VAC / DC Amps: 1 to 600A IR: 50kA I.R. AC, 20kA I.R. DC OTN (Canada)* Volts: 250VAC Amps: 15 to 60A IR: 50kA I.R. AC OTS Volts: 600VAC / 300VDC Amps: 1 to 600A IR: 50kA I.R. AC, 20kA I.R. DC HIGHLIGHTS: Versatile Lowest cost protection for circuits serving non-inductive loads APPROVALS: UL Listed to Standard ile E2137 CSA Certified to Standard C22.2 No * Self-certified for DC per UL248 *The Canadian Electrical Code requires these fuses in ratings 15 through 60A to be of the low melting point design; use OTN P 30 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

31 UL/CSA LISTED POWER USES CLASS K-5 OT/OTN/OTS CATALOG NUMBERS (AMPS) 250V 600V OT1 OT30, OTN30* OT125 OTS1 OTS30 OTS125 OT2 OT35, OTN35* OT150 OTS2 OTS35 OTS150 OT3 OT40, OTN40* OT175 OTS3 OTS40 OTS175 OT4 OT45, OTN45* OT200 OTS4 OTS45 OTS200 OT5 OT50, OTN50* OT225 OTS5 OTS50 OTS225 OT6 OT60, OTN60* OT250 OTS6 OTS60 OTS250 OT7 OT65 OT300 OTS300 OT8 OT70 OT350 OTS8 OTS70 OTS350 OT10 OT75 OT400 OTS10 OTS75 OTS400 OT12 OT80 OT450 OTS12 OTS80 OTS450 OT15, OTN15* OT90 OT500 OTS15 OTS90 OTS500 OT20, OTN20* OT100 OT600 OTS20 OTS100 0TS600 OT25, OTN25* OT110 OTS25 OTS110 * In Canada DIMENSIONS RECOMMENDED USE BLOCKS WITH BOX CONNECTORS OR ONE-TIME CLASS K-5 USES Ampere use Rating Catalog Number 250V 600V 1-Pole 3-Pole 1-Pole 3-Pole A variety of pole configurations and termination provisions are available. Refer to Section B for details. P Ampere A B C D E Rating in mm in mm in mm in mm in mm 250V-OT, OTN uses / / / / /8 3 3/ / / / / / / / / / / / / / / V-OTS uses / / / / / /8 3 3/ / / / / / / / / / / / /8 80 1/ / A A EP.MERSEN.COM P 31

32 P A3T & A6T ast Acting/Class T UL/CSA LISTED POWER USES THESE SMALL DIMENSION USES ARE THE RIGHT IT... OR A TIGHT IT ast-acting A3T and A6T Class T fuses combine two highly desirable features - high current limitation and a small physical size. Their unique dimensions prevent the substitution of other fuses with lower voltage ratings or current-limiting capability. These fuses have glass melamine bodies for superior dimensional stability and catalog numbers stamped into the blades for permanent identification. EATURES/BENEITS: Extremely current-limiting for low peak let-thru current Unique dimensions prevent replacement by other fuse classes Blade-stamped catalog numbers for permanent identification Small physical size for greater design flexibility RATINGS: A3T Volts: 300VAC / 160VDC Amps: 1 to 1200A IR: 200kA I.R. AC, 50kA I.R. DC A6T Volts: 600VAC / 300VDC Amps: 1 to 800A IR: 200kA I.R. AC, 100kA I.R. DC HIGHLIGHTS: ast-acting Extremely current-limiting Small physical size DC ratings APPLICATIONS: Loadcenters Panelboards Switchboards Circuit breakers Metering centers APPROVALS: UL listed to standard ile E2137 CSA certified to standard C22.2 no DC listed to UL standard 248 P 32 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

33 UL/CSA LISTED POWER USES CLASS T A3T & A6T ast Acting CATALOG NUMBERS (AMPS) 300V 600V A3T1 A3T60 A3T300 A6T1 A6T60 A6T300 A3T3 A3T70 A3T350 A6T3 A6T70 A6T350 A3T6 A3T80 A3T400 A6T6 A6T80 A6T400 A3T10 A3T90 A3T450 A6T10 A6T90 A6T450 A3T15 A3T100 A3T500 A6T15 A6T100 A6T500 A3T20 A3T110 A3T600 A6T20 A6T110 A6T600 A3T25 A3T125 A3T700 A6T25 A6T125 A6T700 A3T30 A3T150 A3T800 A6T30 A6T150 A6T800 A3T35 A3T175 A3T1000 A6T35 A6T175 A3T40 A3T200 A3T1200 A6T40 A6T200 A3T45 A3T225 A6T45 A6T225 A3T50 A3T250 A6T50 A6T250 RECOMMENDED USE BLOCKS WITH BOX CONNECTORS OR AMP-TRAP CLASS T USES Ampere Rating Catalog Number 300V 600V 1-Pole 3-Pole 1-Pole 3-Pole T 30308T 60306T 60308T T 30608T 60606T 60608T T 31003T 61031T 61033T T 32033T 62031T 62033T T 34033T 64031T T 66031T A variety of pole configurations and termination provisions are available. Refer to Section B for details. P DIMENSIONS Ampere Rating A B C D E G in mm in mm in mm in mm in mm in mm in mm 300V-A3T uses V-A6T uses A3T 1-60 A6T 1-30 A6T G G E E A A3T A A6T EP.MERSEN.COM P 33

34 P Class C Canadian uses UL/CSA LISTED POWER USES Mersen Class C fuses have British standard (BS88) dimensions and are exact replacements for the British fuses and older HRCII-C fuses. Class C fuses are not dimensionally or electrically interchangeable with other North American fuses. They feature ceramic bodies and bolt-in mounting. They are for short-circuit protection only, in motor controllers, for example, where overload protection is provided by an overload relay. RATINGS: Volts: 600VAC, 460VDC, 450VDC, 350VDC Amps: 2 to 600A I.R.: 200kA I.R. AC (2-600A), 40kA I.R. DC 460VDC: ES (2-60A), ES ( A), ESC ( A) 450VDC: ESC ( A) 350VDC: ES (80-100A, ESC (80-200A) APPROVALS: CSA Certified HRCII-MISC IEC * Ceramic version available upon request HIGHLIGHTS: BS88 dimensions ast-acting APPLICATIONS: Short circuit and back-up protection of motor controllers and components CATALOG NUMBERS (AMPS) ES2 ES25 ES100 ESC100 ES300 ESC350 ES4 ES30 ES125 ESC125 ES350 ESC400 ES6 ES40 ES150 ESC150 ES400 ESC450 ES10 ES50 ES200 ESC200 ESC250 ESC500 ES15 ES60 ESC80 ES250 ESC300 ESC600 ES20 ES80 P 34 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

35 UL/CSA LISTED POWER USES CLASS C Canadian uses CLASS C DIMENSIONS INCHES (MM) Catalog No. A B D E G H K ES (52.3) 0.81 (20.6) 3.31 (84.1) 0.35 (8.9) 0.06 (1.6) 2.83 (71.9) 0.20 (5.2) 0.84 (21.3) ES (55.6) 1.06 (26.9) 3.44 (87.4) 0.50 (12.7) 0.06 (1.6) 2.77 (70.4) 0.20 (5.2) 1.07 (27.2) ES (68.3) 1.34 (34.0) 4.31 (109.5) 0.75 (19.1) 0.13 ( (92.5) 0.34 (8.7) 1.43 (36.3) ES (68.3) 1.58 (40.1) 4.31 (109.5) 0.75 (19.1) 0.13 (3.2) 3.64 (92.5) 0.34 (8.7) 1.69 (42.9) ESC (61.9) 1.34 (33.9) 5.31 (134.9) 0.75 (19.1) 0.13 (3.2) 4.28 (108.7) ESC (61.9) 1.59 (40.3) 5.31 (134.9) 0.75 (19.1) 0.13 (3.2) 4.28 (108.7) ES (76.2) 2.00 (50.8) 5.38 (136.7) 1.00 (25.4) 0.25 (6.4) 4.25 (108.0) 0.41 (10.4) ESC (76.2) 2.00 (50.8) 8.25 (209.6) 1.00 (25.4) 0.25 (6.4) 5.16 (131.0) ESC (76.2) 2.88 (73.0) 8.25 (209.6) 1.00 (25.4) 0.38 (9.5) 5.06 (128.6) P ES2-30 ES40-60 ES ES ESC ESC ES ESC ESC D A G B E EP.MERSEN.COM P 35

36 P NRN/NRS Class H Canadian uses UL/CSA LISTED POWER USES NON-TIME DELAY USES CATALOG NUMBERS Mersen NRN (250V) and NRS (600V) fuses are standard non-time delay fuses, with a 10kA short circuit rating. 250 Volt NRN15 through NRN60 fuses are certified as Type P fuses, satisfying the Canadian Electrical Code for low melting-point non-time delay fuses. Also qualifying for Type P are OTN15 through OTN60, which are Class K-5 fuses with a 50kA short circuit rating (found in the OT/OTS section of this catalog). DIMENSIONS - INCHES (MM) 250V NRN uses Ampere Rating A B C D E (50.8) 0.56 (14.2) 0.50 (12.7) (76.2) 0.81 (20.6) 0.63 (16.0) (149) 1.06 (26.9) 0.13 (3.18) 0.75 (19.1) 1.00 (25.4) (181) 1.63 (41.4) 0.19 (4.76) 1.13 (28.7) 1.38 (35.1) (219) 2.13 (54.1) 0.25 (6.35) 1.63 (41.4) 1.88 (47.8) (264) 2.63 (66.8) 0.25 (6.35) 2.00 (50.8) 2.25 (57.2) 600V NRS uses (127) 0.81 (20.6) 0.63 (16.0) (139) 1.06 (26.9) 0.63 (16.0) (200) 1.38 (35.1) 0.13 (3.18) 0.75 (19.1) 1.00 (25.4) (244) 1.88 (47.8) 0.19 (4.76) 1.13 (28.7) 1.38 (35.1) (295) 2.63 (66.8) 0.25 (6.35) 1.63 (41.4) 1.88 (47.8) (340) 3.13 (79.5) 0.25 (6.35) 2.00 (50.8) 2.25 (57.2) 250V use Ampere Ratings NRN1 NRN80 NRN2 NRN90 NRN3 NRN100 NRN4 NRN110 NRN5 NRN125 NRN6 NRN150 NRN10 NRN175 NRN15* NRN200 NRN20* NRN250 NRN25* NRN250 NRN30* NRN300 NRN35* NRN350 NRN40* NRN400 NRN45* NRN450 NRN50* NRN500 NRN60* NRN600 NRN70 * CSA Type P 600V use Ampere Ratings NRS1 NRS80 NRS2 NRS90 NRS3 NRS100 NRS4 NRS110 NRS5 NRS125 NRS6 NRS150 NRS10 NRS175 NRS15 NRS200 NRS20 NRS250 NRS25 NRS250 NRS30 NRS300 NRS35 NRS350 NRS40 NRS400 NRS45 NRS450 NRS50 NRS500 NRS60 NRS600 NRS70 P 36 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.

37 CRN/CRS Class H Canadian uses P UL/CSA LISTED POWER USES TIME DELAY USES RATINGS: CRN Volts: 250VAC Amps: 15 to 600A I.R.: 10kA I.R. AC CRN & CRS TIME DELAY USES Mersen CRN and CRS fuses are standard fuses, Type D, with 10kA short circuit rating. Type D fuses satisfy the Canadian Electrical Code requirement for low melting-point fuses. DIMENSIONS - INCHES (MM) 250V CRN uses Ampere Rating A B C D E (50.8) 0.56 (14.2) 0.50 (12.7) (76.2) 0.81 (20.6) 0.63 (16.0) (149) 1.06 (26.9) 0.13 (3.18) 0.75 (19.1) 1.00 (25.4) (181) 1.63 (41.4) 0.19 (4.76) 1.13 (28.7) 1.38 (35.1) (219) 2.13 (54.1) 0.25 (6.35) 1.63 (41.4) 1.88 (47.8) (264) 2.63 (66.8) 0.25 (6.35) 2.00 (50.8) 2.25 (57.2) 600V CRS uses (127) 0.81 (20.6) 0.63 (16.0) (139) 1.06 (26.9) 0.63 (16.0) (200) 1.38 (35.1) 0.13 (3.18) 0.75 (19.1) 1.00 (25.4) (244) 1.88 (47.8) 0.19 (4.76) 1.13 (28.7) 1.38 (35.1) (295) 2.63 (66.8) 0.25 (6.35) 1.63 (41.4) 1.88 (47.8) (340) 3.13 (79.5) 0.25 (6.35) 2.00 (50.8) 2.25 (57.2) CRS Volts: 600VAC Amps: 15 to 600A I.R.: 10kA I.R. AC APPROVALS: CSA Certified Type D CATALOG NUMBERS 250V use Ampere Ratings* CRN15 CRN60 CRN200 CRN17-1/2 CRN70 CRN225 CRN20 CRN80 CRN250 CRN25 CRN90 CRN300 CRN30 CRN100 CRN350 CRN35 CRN110 CRN400 CRN40 CRN125 CRN450 CRN45 CRN150 CRN500 CRN50 CRN175 CRN600 * or 1/10-12A ratings use Tri-onic TR-R. 600V use Ampere Ratings** CRS15 CRS60 CRS200 CRS17-1/2 CRS70 CRS225 CRS20 CRS80 CRS250 CRS25 CRS90 CRS300 CRS30 CRS100 CRS350 CRS35 CRS110 CRS400 CRS40 CRS125 CRS450 CRS45 CRS150 CRS500 CRS50 CRS175 CRS600 ** or 1/10-12 ratings use Tri-onic TRS-R. EP.MERSEN.COM or correct, without notice, any information contained in this datasheet. P 37

38 P use Pullers/Clip Clamps CIRCUIT PROTECTION ACCESSORIES PLASTIC USE PULLERS Mersen plastic fuse pullers are fully insulated, made of high-dielectric, reinforced plastic with notched handles to provide a safe grip. Stronger and more durable than fiber pullers, they are permanently marked with the recommended fuse ampere range. Yellow color for safety. Catalog No. Description Use with uses Size Length (in) Ampere Volts Diameter (in) G small /32-1/ G pocket 7-1/ G large 11-3/ PLASTIC USE CLAMPS Mersen fuse clip clamps are used to clamp fuse clips together onto a fuse ferrule or blade. An easy twist of the cap tightens the jaws against the clip, preventing Catalog Use with use Clips Weight heating by reducing No. Type Ampere Volts (ounces) resistance at the point G errule G errule where fuse and clip make G errule contact. This helps prevent G errule G loss of spring tension G knife blade or due to annealing from G* G overheating. * Wide jaws permit clamping split clips. NYLON USE PULLERS Mersen nylon fuse pullers are fully insulated, made of high-dielectric, high impact nylon with no-slip handles and protective finger stops for greater safety when inserting fuses. Yellow color for safety. Description Use with uses Catalog No. Size Length (in) Ampere Volts G small G medium 7-1/ P 38 EP.MERSEN.COM or correct, without notice, any information contained in this datasheet.